B libel is written info slander is oral
There are no commas in that sentence. A comma is only used to separate clauses when coupled with a conjunction, or in listing.
I think the correct answer from the choices listed above is option B. The narrator allude the to the possibility of requiring a wife who could match Adams social standards at the end of the sentence from Mark Twain's "The 1,000,000 Bank-Note". Hope this answers the question.
because it taught and showed him what to keep in mind
